Method for actuating a semiconductor power switch, actuation circuit for a semiconductor power switch, and electronic circuit breaker

    公开(公告)号:US12074591B2

    公开(公告)日:2024-08-27

    申请号:US17907770

    申请日:2021-11-22

    IPC分类号: H03K17/082 H02H9/00

    摘要: A method for actuating a semiconductor power switch of an AC circuit is provided, which can be activated or deactivated by the semiconductor power switch. The method has the following steps: a) ascertaining the present current value and the present voltage value of the AC circuit; b) ascertaining whether the present current value exceeds a specifiable maximum value and if so, c1) generating an actuation signal for deactivating the current circuit, c2) generating an actuation signal for activating the current circuit within a period of time after generating the actuation signal for deactivating the current circuit, wherein the period of time is less than or equal to the period duration of the voltage, and c3) ascertaining whether the present current value exceeds a specifiable maximum value, which corresponds to the previous maximum value or is less than the previous maximum value, after activating the current circuit.

    DC distribution panel
    4.
    发明授权

    公开(公告)号:US12015266B2

    公开(公告)日:2024-06-18

    申请号:US17600868

    申请日:2019-07-11

    IPC分类号: H02H7/22 H02H1/00 H02H9/00

    CPC分类号: H02H7/22 H02H1/0007 H02H9/001

    摘要: An object is to provide a DC distribution panel that, even when short-circuit current has occurred in one feeder, interrupts only the feeder where short-circuit current has occurred, and thus can continue operations of load apparatuses connected to normal feeders. This DC distribution panel includes: an input terminal including positive and negative input terminals; circuit breakers having short-circuit current interruption units connected to at least either of positive electric paths and negative electric paths respectively branched from the positive and negative input terminals; and output terminals including positive output terminals and negative output terminals of the plurality of circuit breakers. At least one of the plurality of circuit breakers includes a reverse current interruption unit for interrupting reverse current flowing through the positive electric path from the output terminal side to the input terminal side.

    INRUSH CURRENT SUPPRESSION CIRCUIT, CONVERTER SYSTEM, AND MOTOR DRIVE DEVICE

    公开(公告)号:US20240162704A1

    公开(公告)日:2024-05-16

    申请号:US18283891

    申请日:2021-04-02

    申请人: Fanuc Corporation

    摘要: This inrush current suppression circuit, which suppresses inrush current during pre-charging of a capacitor connected in parallel to the DC-output side of a converter that converts AC power supply voltage to DC voltage, includes: a resistor that is provided between the DC-output side of the converter and the capacitor, or that is provided on the AC-input side of the converter; a switch that is selectively switched between an open state, in which an electric circuit is formed with the resistor interposed, and a closed state, in which a short circuit is formed without the resistor interposed; an AC power supply voltage detection unit that detects whether the AC power supply voltage is inputted to the converter; and a switch control unit that switches the switch from the open state to the closed state after a prescribed time has elapsed from when the AC power supply voltage detection unit detects inputting of the AC power supply voltage to the converter.

    In-vehicle power supply system
    8.
    发明授权

    公开(公告)号:US11970121B2

    公开(公告)日:2024-04-30

    申请号:US17630937

    申请日:2020-07-22

    IPC分类号: B60R16/023 H02H9/00 H02H9/02

    摘要: An in-vehicle power supply system includes first to sixth power supply hubs connected to a main feed line, electronic devices connected to the first to sixth power supply hubs via a sub feed line, and a control device configured to control power feeding to the electronic devices. The control device is configured to control, based on a condition regarding a current consumption of the electronic devices, power feeding to the electronic devices such that the current consumption of the electronic devices is lower than an allowable current consumption that is predetermined in accordance with a scene of using a vehicle.

    POWER GRID PROTECTION
    9.
    发明公开

    公开(公告)号:US20240128742A1

    公开(公告)日:2024-04-18

    申请号:US18485079

    申请日:2023-10-11

    IPC分类号: H02H9/00 H02H1/00

    CPC分类号: H02H9/005 H02H1/0007

    摘要: Devices, methods and techniques related to the suppression of electrical transients are disclosed. In one example aspect, an electrical transient protection device includes a sensor configured to monitor power transmission on a transmission line of a power system, a controller configured to generate a control signal in response to a detection of one or more electrical transients by the sensor, and a controller transient suppression unit comprising at least a switch that exhibits a changeable impedance. The controllable transient suppression unit configured to impose a load to the power system. The load has a substantially same impedance as a characteristic impedance associated with a part of the power system.